Nowadays, seat belts are usually made of 100 percent polyester. Less-energized yarns, according to research, produce more durable seat belts because the threads can pack together more tightly. Seat belt webbing typically has about 300 warp threads durch 46mm belt or nearly 150 ends vermittels inch. Belts may also be https://vuf.minagricultura.gov.co/Lists/Informacin%20Servicios%20Web/DispForm.aspx?ID=10574444